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41 lines
912 B
41 lines
912 B
var assert = require('assert');
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var async = require('async');
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module.exports = function (_, dir, finish, gm, im) {
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if (!gm.integration) return finish();
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var alphaTypes = [
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"Activate",
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"On",
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"Deactivate",
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"Off",
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"Set",
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"Opaque",
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"Transparent",
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"Extract",
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"Copy",
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"Shape",
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"Background"
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];
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// alpha not supported by GM so only test IM
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if (!im) {
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assert.throws(function() {
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gm(dir + '/edge.png')
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.alpha( alphaTypes.pop() ).write(dir+'/alpha_fail.png');
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});
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finish();
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} else {
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async.eachSeries(alphaTypes,function(alphaType,cb) {
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var m = gm(dir + '/edge.png').options({imageMagick: im}).alpha( alphaType );
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var args = m.args();
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assert.equal('convert', args[0]);
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assert.equal('-alpha', args[2]);
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assert.equal(alphaType, args[3]);
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m.write( dir + '/alpha_' + alphaType + '.png', cb);
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},finish);
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}
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}
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